Draft connection



' A. s. KROTZ DRAFT. CONNECTION Filed Jan. 5. 1920 M MD g5 15 15 W c0 Q g 1? 3U O 1? '14- 15 F 1 ITBDQGO 'Qogo' D a t 4 worm Patented Dec. 4, 1923..

UNITED, s r

TES i Us? orrl'cs.i

ALVARO s. KROTZ, OFiANESVILLE, WISCONSIN, AssIeNoa'ro GENERAL: Morons con ronA'rIo or DETROIT,

'MICEIIGANgA .oonronnTIoN or DELAWARE. DRAFT. CONNECTION.

Application.filed January 5, 19 20, Serial No. 349593;;

To all whom it may concern Be it known that I, ALVARO S. Know, a citizen of the UnitedStates, and .a resident of J anesville, county of Rock, and State of Wisconsin, have invented certain new and useful Improvements in Draft Connections, of which the following is afull, clear, concise, and exact description, such as will enable others skilled in the art-to which the invention relates to make and use the same,

' reference bein made-therein tothe accom panying ClI'fiWlIlgS, which form a part of this specification.

The invention relatesto a draft connecs tion for tractor-drawn implements, and more particularly to. means for connecting to a drawing vehicle, as a'tractor, an agricultural implement,as a lister or the like, wherein it is necessary v to offset the line of draft of the vehicle from that of the drawn implement. I V I In the operation known as double-1ist ing, it is customary to go over the ground twice with a lister. the bottoms being so guided in the second listing, that they travel in the middle of the ridges formedbythe first listing." By this means the surface'is much more thoroughly loosened than by a single listing and the character of the seed ,bedis correspondingly improved. 1

fIt has furthermorebeen proposed to employ tractors in drawing listers, and this practice presents no particular difiiculty so far as concerns thefirst listing. On the sec- 0nd listing, however, with a two-row lister, a material difiiculty arises. The ordinary tractor is wide enough to straddle only one ridge,.and since it is. impracticable to keep the wheels on the tops of the ridges the tractor must travel .in the furrows, its center line being thereby oifsetfrom thefce'nterline of the lister. The lister bottoms "arevery sensitive to side draft, and must beguided to travel along the center lines of the ridges. Qwing therefore to the. difliculty above pointed out in regard to the path of the tractor being offset from that of the lister, it has hitherto been found practically impossible to use tractors for this class ofwork.

. It is the primary object of my invention to provide a new form" of draft. connection whereby a two-row lister lorthe like may be so attached to a tractor ortother dra g vehicle as to travelto one side of the'central line of draft ofthe drawing vehicle.

With this and other objects in view a'swill" fully appear from the following description,

the invention consists in certain; combinaparts and elements as more comtions aof plctely hereinafter set forth and definitely pointed out in the claims hereto appended. In the accompanying drawing:"; Fig. l'is. a'plan view of a lister, showing 1ts relation to a tractor and to the ground I f surface.

Fig. 2 isan elevation, of the draft con nection, and V V V I V ig. 3. is an'elevation of the guiding.

wheels ofythelister, showing parts of the I v a 7Q draft devices. t In-the -drawing,.10. indicates a lister having the bottoms 11, 12, suitably connected toa frame member or cross-bar 13. "The front end of the frame 14 ofthelister is pivotally supported by hearing 15 upon atruck or wheeled frame 16, the wheels 17 of which are gong-shaped as shown to travel in a furrow and serve to guide the main frame.

The frame '16 is providedjwith'a plurality of holes 18 for? attachment of a clevis or otherdraft means as usual.

A detailed descriptionmof the lister is deemed unnecessary, as the present invention is not .concerned -,with:the specific details of the lister itself, and may be employed in connection 7 sired'construction of two-rowlister. It will be sufficient to state that in' the first listing the tractor or other'draft device may be connected in-the usual manner to the frame in the lower part will be to produce the surface contour reprewith any'usual or dey 16; The first listingfwill leave the'surface sented dottedlines, with furrows 20 and ridges 19f, To producethe desired effect it will be necessary, of course, for the bottoms to travel approximately 011' the center lines 'of ridges 19, the tractor wheels 21," as indicated by dot and dash lines, traveling in the furrows;20, and the gong wheels'17, as indicated ,by dottedlines, in the furrowfol lowingfone of thegtractor wheels.

' In order, to maintain this offset relation iibetwe n the l ster andthe tractor I. prov de 1 Aframe 16 of clev1s bar is shown'as formed of flat bars at an angle of 90 to eachother.

as will be obvious.

a novel form ofdra-ft connection. It will be seen that the frame 22 of the tractor is provided with means for receiving the clevis pin 23 by which the draw-bar Qtis secured to the tractor. The draw-bar 24, which mayconsist of a pair together, .as

bent in such manner as to receive clevis pins bar maybe attached at any of'the holes 18,

"The other end of the evener 27 is provided with a hole to receive "bolt'29by means of which one' erid'of the long link oriclevis barSO is secured thereto. The clevisbar 3O is secured at the other end by bolt mid the cross barl3 o'f' the lister' frame preferably 'at a point somewhat ofiset from the I center. itwi'll'be understood that the various points of connection of the draw-bar, evener, and

on a .tendency of a forward pull 17 to the right.-

ratio when clevis bars are sufiiciently loose to permit free movement of these members during operation.

It is believed that the operation of the invention "will'be clear from'th'e foregoing description. The pull'exe'rted by'the tracto'r'through the draw bar24'wi'l1 be communicatedthrou'gh the evener 27 to the front of wheeled frame 16' and to "the crossframe member 13. Since clevis, bar 30' is attached to the rear or main frame and extends at an angl'e'to theline of travel, the will be'to cause comprising elements "27,

toward the right in Fig. 1,'thus swinging the guide or gong Wheels This tendency is counteractediby the'lateral pull to the left due to the offset relation of the tractor. Proper 'pro'portioning of the lengths of the links of the systemand of'the points of connection will result in so balancing the operative forces as to cause the guide wheels to travel "accurately in line with the furrow. Furthermore, with the-arrangement shown, the guide wheels willturn 'atabout thesame the tractor moves to right orlett as if the tractor were 'hitched'directly' to the front crate frame 16. "In thestructure as the linkage system 28,- andBO to "swing I-have herein disclosed-it the "draw-bar 24 is perferably about half the length of the 'clevis bfar 30, but the proportions of these and "other parts 'are'not necessarily limited to 'thosesho'wn. It will be obvious th'atfs'uch 1 factors as the length ofevene'r'27, the'rela- "tive" lengths of a the clevis bars," the point of attachment of the'frame, the point'o'f r This clevis attachment of draw-bar 24 to the evener are all capable of variation to meet changing conditions of side draft 'or'toproduce the sameefi'ects with various changes of relations of the said factors;

It will be noted that the.ar-rangement v shown also offers the advantage of co m municating a part of the draft directly to the frame member to which the bottoms are attached, thereby relieving the lister frame '7 from strains to which it would otherwise be subjected. V V

It will be understood'that various changes inthe details of construction may be made in additionto those specifically'pointed out 3 above without departing from the spirit and scope of the invention and therefore I do f not wish to be limited to the specific details above described. Y

'1. "The combinationwvith a draft device and an implement to be drawn therebm said implement comprising a pivotedfront frame havingguiding-o means adapte'dto travel in a furrow, of draft connections between said 99 draft'device and saidimplement including connection-to said frame whereby aforward pull may be exerted thereon, said connec tions fb'eing constructed and -arran'ged to cause said guiding means to travel in a furrow offset from the central line of draft of said draft device. r 1 2. The combination with a draft device animplementto'be drawn 'thereby, said I implement comprisinga centrally located 0 front frame having guiding means thereon adaptedto travelin a furrow,"0f draftconne'ctions between said draft deviceand said implement comprising connections to said frame and to.said'implement-independently of said frame,said connections'being constructed and arranged toc'ausesaid guiding means to travel in afnrrow offset from "the central line ofdra-ft of said 'draftd'evice.

3.'The combinationwith'atractor and an implement to be "drawn'thereby, said imple ment c'omprisi-ng a front wheeled frame free i toturn about avertical pivot, 'ofldraft con 'IIGOtlOIlS between Sfild tractor'and implement in'cludinga connection "to" thc fro'nt of said wheels,"of a "draft connection comprising a means attached to the wheeled frame, a means attached to the implement independent ly of said wheeled frame and means adapted tojoin both saidmeans toa tractor, the connections being 'rarranged and eonstru'cted to guide a the implement in a path offset fIOIHPthEllIIBTOf draft-of the tractor.

5. The combinationtwith 'a-n implement comprising a main frame and a wheeled guiding frame connected thereto to swing about a vertical pivot, of a draft connection comprising a link attached to the wheeled frame, a link attached to the main frame, and means adapted to connect said links to a tractor, the whole being constructed and arranged to cause the wheeled frame to follow a path offset from the line of draft of the tractor.

6. The combination with an implement comprising a main frame and a wheeled guiding frame pivotally connected thereto, of a draft connection comprising a link at tached to the wheeled frame, a link attached to the main frame, an evener connecting said links and a draw-bar adapted to connect said evener to a tractor, thedraft connection being arranged and constructed to point of connection of the draw-bar to guide the implement in a line offset from the the tractor. r V

. 7. The combination with a tractor and an implement having two earth working 'devices adapted to operate in ridges, and a guiding device adapted to travel in a furrow between said ridges, of draft connections between said tractor and implement Comprising plurality of links connected to said guldlng device and to said implement independently of said guiding device and adapted to maintain said guiding device out of the central line of draft of said tractor and in the path of one of the rear tractor wheels.

AL ARO sKnoTz.

35 In testimony whereof I afiix my signature. 

